FIFA Frenzy: Polymarket vs Kalshi, Who’s Kicking Whose Wallet?

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Ah, the FIFA World Cup-where nations clash, dreams shatter, and prediction markets laugh all the way to the bank. Polymarket’s single tournament winner market boasts a cool $2 billion in bets, while Kalshi, ever the overachiever, juggles 48 markets on the same question and rakes in fees like a gambler on a hot streak.

These two platforms, like star-crossed lovers, agree on the football but bicker over the spoils. BeInCrypto’s Dune dashboards, spread across three venues, reveal where the volume, fees, and leftover crypto bets have gone to hide-probably in some offshore account, sipping margaritas.

Sports: The New Black in Prediction Markets

According to Binance Research, prediction markets turned over a record $31.2 billion in May, up 15% from January. Kalshi, the prom queen of the industry, claimed 58% of that flow, while Polymarket, the brooding artist type, snagged 28%. Open interest? A modest $1.3 billion-enough to buy a small country, or at least its national team.

World Cup season is pulling prediction markets to another ATH. US$31.2B in May notional volume, up ~15% from ~US$27B in January.

What began the year as a competitive field has consolidated into a two-platform market:

🔸Kalshi: $18B (58%)
🔸Polymarket: $8.8B (28%)
🔸Others: ~14%…

– Binance Research (@BinanceResearch) June 11, 2026

BeInCrypto’s data spills the tea: Kalshi’s biggest month of 2026 saw sports trading volume hit $10.44 billion. Elections, the category that once made Kalshi famous, managed a paltry $173.66 million-roughly 60 times less. Politics? More like po-litics, am I right?

Crypto markets did $2.02 billion on Kalshi, while a sports-adjacent exotics bucket added $4.88 billion. The moral? The 2026 World Cup, not politics or coin prices, is the real MVP powering Kalshi’s growth. Who needs democracy when you have football?

Note: All weekly data points have been condensed into monthly data points. Because who has time for nuance?

June is already seeing sports take the lead. With the World Cup still in full swing, this figure might surge-unless, of course, the elections category decides to steal the spotlight. Politics: the ultimate spoiler.

The single biggest football market shows just how concentrated this engine is. Or, as the Russians say, “Vse na futbol!”

One $2 Billion Market vs. 48 Smaller Ones: A Tale of Two Platforms

Polymarket’s World Cup Winner market holds $2 billion in lifetime volume, $436 million in liquidity, and traded $137 million on Thursday alone. Their FIFA World Cup section spans over 330 active markets-because why stop at one when you can have 330?

Kalshi’s equivalent event has built $182.3 million across 48 markets. On the largest listed events, the gap runs roughly 11 to 1 in Polymarket’s favor. Thursday’s flow on Polymarket alone nearly matched the lifetime volume of Kalshi’s biggest World Cup event. Ouch.

The venues disagree on structure, not on football. Both books price the World Cup odds identically, with Spain the favorite at 17%. Kalshi pays 5.56x on Spain and France alike-because why choose when you can hedge?

Kalshi spreads flow across dozens of match-level books, while Polymarket pools it in one tournament-scale market. Kalshi still clears more total volume platform-wide, so it’s a contest of breadth vs. depth, not big vs. small. Or, as Tolstoy might say, “All happy platforms are alike; each unhappy platform is unhappy in its own way.”

Sports Led Polymarket All Year, and Now It’s Cooling. Surprise?

Sports topped every weekly category split on Polymarket in 2026. January saw sports at $6.20 billion, or 43% of the $14.34 billion total, ahead of politics at $4.49 billion and crypto at $3.65 billion. Football: the new opium of the masses.

Note: All weekly data points have been condensed into monthly data points. Because brevity is the soul of wit.

The peak came in March, when sports did $8.77 billion of a record $19.58 billion. By June, the total had cooled about 70% to $5.91 billion, yet the sports share climbed to 56.5%. Crypto held $1.73 billion, and politics shrank to $831.25 million. Football dominance? Not just a tournament artifact-it’s a way of life.

Kalshi Takes the Fees, Opinion Shows the Endgame

In May, Kalshi collected $137.86 million in trading fees, compared with Polymarket’s $28.07 million and Opinion’s $159,330. A five-to-one revenue gap-consistent with Binance Research’s finding that Kalshi clears the most volume. Money talks, and Kalshi has the loudest voice.

The smaller venue Opinion shows where this trend ends. In January, crypto led with $729.52 million of a $1.46 billion week. By June 1, sports accounted for 99.4% of activity, while crypto fell below $500,000. FIFA predictions didn’t just grow-they replaced everything else. Football: the new world order.


The surprises stack up. Sports have beaten crypto on every venue, including the crypto-native ones, and politics collapsed to a rounding error. The platforms agree on football, both pricing Spain. Most striking? The record May arrived while overall activity was cooling. “Life is what happens to you while you’re busy making other plans,” as Lennon might say-or was it Pasternak?

What happens next decides the FIFA World Cup predictions race. Daily group-stage games favor Kalshi’s match-level structure, while knockout drama should feed Polymarket’s deep tournament pool. The lead may change hands week by week-a game of financial foosball. Traders, watch closely: will kickoff revive total volume? Will elections claw back share from sports? Will open interest build into the knockouts? If the group stage can’t reverse the slowdown, the prediction market boom will have peaked before the first whistle. “And in the end, the love you take is equal to the bets you make.” Or something like that.

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2026-06-13 19:32